A1 Journal article (refereed)
Development of gold(i) phosphorescent tweezers for sensing applications (2022)

de Aquino, A., Caparrós, F. J., Aullón, G., Truong, K.-N., Rissanen, K., Lima, J. C., & Rodríguez, L. (2022). Development of gold(i) phosphorescent tweezers for sensing applications. Dalton Transactions, 51(42), 16282-16291. https://doi.org/10.1039/D2DT02515A

JYU authors or editors

Publication details

All authors or editors: de Aquino, Araceli; Caparrós, Francisco J.; Aullón, Gabriel; Truong, Khai-Nghi; Rissanen, Kari; Lima, João Carlos; Rodríguez, Laura

Journal or series: Dalton Transactions

ISSN: 1477-9226

eISSN: 1477-9234

Publication year: 2022

Publication date: 22/09/2022

Volume: 51

Issue number: 42

Pages range: 16282-16291

Publisher: Royal Society of Chemistry (RSC)

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1039/D2DT02515A

Publication open access: Not open

Publication channel open access: 

Abstract

The synthesis of the gold(I) alkynyl-fluorene compound 2 containing a diphosphane (dppb = 1,4-bisdiphenylphosphanebutane) has been easily achieved by the treatment of the previously synthesized [2-ethynylfluorene-Au]n polymer (1) and the corresponding dppb diphosphane in an adequate 2 : 1 stoichiometry. Compound 2 shows a boat-tweezer conformation that makes it ideal for being used as a host in molecular recognition processes. Different polyaromatic hydrocarbons (PAHs) and polyfluorinated compounds (PFCs) have been used as guests and a stronger interaction has been detected for PAHs, especially for anthracene, in agreement with spectrofluorometric titrations and the calculated values of the association constants, which is confirmed by DFT calculations. Compound 2 has then been immobilized in different organic matrices, in order to enhance room temperature phosphorescence (RTP). This promotes sensing with dual emission and furthermore in the case of the analytes under investigation, phosphorescence is observed in a range of wavelengths that do not coincide with the fluorescence emission of PAHs and PFCs.

Keywords: coordination complexes; gold; luminescence; PAH compounds; PFC compounds; supramolecular chemistry

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2022

JUFO rating: 1